Adding id card and birthdate for natural person customers and vendors

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extra : source : a47efd9c3ade37ffef780fd0d73d2e6c374aeb07
Fixing POD errors

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extra : source : 1ec1924d5b6a63fc9631e789843843712dd02064
Merge pull request #425 from einhverfr/master

Adding id card and birthdate for natural person customers and vendors